阅读说明：本技术 一种路基的施工方法 (Roadbed construction method ) 是由 张奇 王洋 丁明鹤 苗闫闫 刘金凤 于 2020-07-20 设计创作，主要内容包括：本申请公开了一种路基的施工方法。施工方法包括如下步骤：预制砌块。处理地基。在处理后的地基的两个预设位置均分别砌筑所述砌块,得到两堵挡土墙。向两堵所述挡土墙之间填筑填料。压实所述填料。其中,砌块与填料的密度的差值在预设范围内。本申请通过使砌块与填料的密度的差值在预设范围内,避免了挡土墙和填料同体积不同密度造成的荷载差异引起的地基不均匀沉降,从而避免了路基的结构破坏。(The application discloses a roadbed construction method. The construction method comprises the following steps: and (6) prefabricating the building blocks. And (6) treating the foundation. And respectively building the building blocks at two preset positions of the treated foundation to obtain two retaining walls. And filling filler between the two retaining walls. Compacting the filler. Wherein the difference between the densities of the building blocks and the filler is within a preset range. This application is through making the difference of the density of building block and filler in predetermineeing the within range, has avoided the foundation differential settlement that the load difference that retaining wall and filler and the different density of volume caused to arouse to the structural damage of road bed has been avoided.)

1. A construction method of a roadbed is characterized by comprising the following steps:

prefabricating building blocks;

treating the foundation;

building the building blocks at two preset positions of the treated foundation respectively to obtain two retaining walls;

filling filler between the two retaining walls;

compacting the filler;

wherein the difference between the densities of the building block and the filler is within a preset range.

2. The construction method according to claim 1,

each retaining wall respectively comprises at least two sections of wall bodies arranged along the length direction of the retaining wall, a first settlement joint is arranged between the wall bodies, and sealant is filled in the first settlement joint.

3. The construction method according to claim 1,

before the building blocks are built at two preset positions of the processed foundation respectively, building foundations are arranged at the two preset positions of the processed foundation respectively, the building foundations are made of concrete, and the building blocks are built on the building foundations.

4. The construction method according to claim 3,

the masonry foundation comprises at least two sections of matrixes arranged along the length direction of the masonry foundation, and a second settlement joint is arranged between the matrixes.

5. The construction method according to claim 1,

before filling filler between the two retaining walls, a geogrid is arranged between the two retaining walls, and the exterior of the geogrid is coated with plastic.

6. The construction method according to claim 5, wherein the geogrid is connected with a connector, and the connector is fixed between two adjacent blocks when the blocks are laid.

7. The construction method according to claim 6,

the building block has the joint groove, the connector has the joint piece, the joint piece is used for the joint to be fixed in the joint groove.

8. The construction method according to claim 1,

before filling filler between the two retaining walls, filling gravels at positions which are positioned between the two retaining walls and are respectively attached to the two retaining walls to obtain two gravel layers, and filling the filler between the two gravel layers.

9. The construction method according to claim 8,

the gravel layer and the filler are separated by permeable geotextile.

10. The construction method according to claim 1,

after two retaining walls are obtained, a drainage ditch is arranged on the outer side of each retaining wall, the drainage ditch is made of concrete, and the drainage ditch is connected with the retaining walls.

Technical Field

The application relates to the field of highway engineering, in particular to a construction method of a roadbed.

Background

Generally, the earth retaining wall subgrade of a gravity type, a concrete cantilever type and the like has the problem of load difference caused by the same volume and different densities of the earth retaining wall and the filler, and the problem causes uneven settlement of the foundation, thereby causing inevitable structural damage to the subgrade.

Content of application

The application provides a roadbed construction method which can avoid structural damage of a roadbed.

The embodiment of the application provides a roadbed construction method. The construction method comprises the following steps: and (6) prefabricating the building blocks. And (6) treating the foundation. And building blocks at two preset positions of the treated foundation respectively to obtain two retaining walls. Filling materials are filled between the two retaining walls. And (5) compacting the filler. Wherein the difference between the densities of the building blocks and the filler is within a preset range.

In some embodiments, each retaining wall comprises at least two wall bodies arranged along the length direction of the retaining wall, a first settlement joint is arranged between the wall bodies, and the first settlement joint is filled with sealant.

In some embodiments, before "building blocks at two preset positions of the treated foundation respectively", a masonry foundation is arranged at the two preset positions of the treated foundation respectively, the masonry foundation is made of concrete, and the blocks are built at the masonry foundation.

In some embodiments, the masonry foundation comprises at least two sections of matrixes arranged along the length direction of the masonry foundation, and a second settlement joint is arranged between the two sections of matrixes.

In some of these embodiments, a geogrid is placed between the two retaining walls before "filling the filler between the two retaining walls", the exterior of the geogrid being covered with plastic.

In some of these embodiments, the geogrid is connected with a connector that is secured between two adjacent blocks when the blocks are laid.

In some of these embodiments, the building block has a clamping groove, and the connector has a clamping block, and the clamping block is used for clamping and fixing in the clamping groove.

In some embodiments, before filling the filler between the two retaining walls, gravels are filled in positions which are positioned between the two retaining walls and respectively attached to the two retaining walls, so as to obtain two gravel layers, and the filler is filled between the two gravel layers.

In some of these embodiments, the gravel layer is separated from the filler by a water permeable geotextile.

In some embodiments, after the two retaining walls are obtained, a drainage ditch is arranged on the outer side of each retaining wall, the drainage ditch is made of concrete, and the drainage ditch is connected with the retaining walls.

According to the construction method of the roadbed provided by the embodiment of the application, the construction method comprises the following steps: and the building blocks are prefabricated, and the difference value between the density of the building blocks and the density of the foundation soil is within a preset range. And (6) treating the foundation. And building blocks at two preset positions of the treated foundation respectively to obtain two retaining walls. Filling materials are filled between the two retaining walls. And (5) compacting the filler. This application is through making the difference of the density of building block and filler in predetermineeing the within range, has avoided the foundation differential settlement that the load difference that retaining wall and filler and the different density of volume caused to arouse to the structural damage of road bed has been avoided.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic cross-sectional view of a roadbed in the width direction of the roadbed in the first embodiment of the application;

fig. 2 is a schematic cross-sectional view of a roadbed in the width direction of the roadbed in the second embodiment of the application;

fig. 3 is a schematic cross-sectional view of a roadbed in the length direction of the roadbed in the first embodiment of the application;

FIG. 4 is a schematic cross-sectional view of a gutter in a first embodiment of the present application;

5-6 are schematic structural views of the first embodiment of the present application at the location of the block;

fig. 7 is a schematic structural diagram of a connector according to a first embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.